Joan is not the only one; they've even done it to the gorgeous Karlie and many other fresh faced girls.
If you compared the models VS shots to candids you can clearly see how fresh faced they are.

Yeah, I was gonna say, if you go in other model threads and see some of the VS pics, they do have an issue with over sharpening, weird lighting, etc. I find it mostly an issue with those indoor/solid background shots.